diff --git a/apache/manifests/init.pp b/apache/manifests/init.pp
index dea144a..f8c1864 100644
--- a/apache/manifests/init.pp
+++ b/apache/manifests/init.pp
@@ -559,6 +559,24 @@ class apache::mod::authnz_ldap {
 
 }
 
+
+# Install mod_authz_groupfile.
+#
+class apache::mod::authz_groupfile {
+
+    case $::operatingsystem {
+        "centos","redhat","fedora": { }
+        "ubuntu": {
+            apache::ubuntu::a2enmod { "authz_groupfile": }
+        }
+        default: {
+            fail("Apache module not supported in ${::operatingsystem}.")
+        }
+    }
+
+}
+
+
 # Install mod_include
 #
 class apache::mod::include {
@@ -575,6 +593,7 @@ class apache::mod::include {
 
 }
 
+
 # Install mod_fcgid.
 #
 # === Parameters